Can we have the opportunity to solve problems in Swift (programming language)?MikeMirzayanov

http://codeforces.com/contest/337/problem/A

There are three tags for this problem( Greedy, Graph matching, dp). I have solved it using a greedy technique. Please help me to solve it using dp. Thanks, advanced!!!

N:B You can also suggest the graph matching solution.

Hi Everyone.I am trying to improve in programming skill but can't. I have attended more than 35 contests and solved 200+ problems of Codeforces and total 500+ problems in different Online Judge but even I can't be just PUPIL.I think there are many wrong strategies in practice. Help me please. Thanks advanced!!!.